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Surface morphology

SilcoTek’s CVD coatings are very thin (<2µm) and in general will not mask the microstructures of the substrate underneath. The features of the metal itself will show up in SEM examinations, so a coated rough surface may have a “cracked” appearance compared to a coated smooth surface. To best understand the surface morphology of the coating itself under magnification, you should analyze a coated smooth surface.

In addition to corrosion coupons, SilcoTek offers 316L stainless steel sample coupons with both a rough and smooth side, so just let us know if you prefer this type of coupon in the notes of your sample request.